A handstand push-up (press-up) is a type of push-up exercise that occurs when a person is positioned upside down, according to Wikipedia. It is also called a vertical push-up or an inverted push-up.
For beginners, doing a handstand against the wall is necessary to develop the strength needed, according to Beast Skills. Place a pillow between the hands on the ground. Hold the body in position upside down against the wall for 15 seconds without moving to determine whether you are ready to do the handstand with the push-up. After lowering the head onto the pillow, put the feet down and then kick back up into the handstand position again.